[FFmpeg-user] streams

Nicolas George george at nsup.org
Wed Dec 24 12:00:56 CET 2014

Le quartidi 4 nivôse, an CCXXIII, Vladimir Bilichenko a écrit :
> Here is my modified command:
> ./ffmpeg -y -i mp4.mp4 -i ogv.ogv -i ogv2.ogv -vcodec ppm -filter_complex "[0:v][1:v][2:v]concat=n=3:v=1:a=0:unsafe=1 [v] [a]" -s '1280x1080' -b:v '512K' -b:a '128K' -strict -2 -c:v libx264 -preset ultrafast -map [v] -map [a] -r 30 outtmp.mp4

Remove "[a]" and "-map [a]" (by the way, you should be quoting this for the
shell, this version is unsafe).

> How to configure audio filters?

Re-read my first message. I am unfortunately not a telepath, I can not guess
what you want to do with audio streams that do not exist.


  Nicolas George
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